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Got a walker bolt on carb legal cat yesterday and just installed it today. O2 voltage now shows normal operation. After taking the old cat off and being able to move it around, I could hear the pieces inside the cat rolling around. For some reason I couldn't hear anything rattling around when I previously tried the "smack it with a mallet" test.
Thanks for the update. I am in the same boat but mine the code goes away about 80% of the time so I was holding off on putting a new cat in for now. I helped a friend do a new magna flow cat on her Toyota sequoia and the code didn't go away still so we ended up tricking it with a anti fouler.
That looks like a handy code reader with the ability to graph the O2 sensors!
Thanks for the update. I am in the same boat but mine the code goes away about 80% of the time so I was holding off on putting a new cat in for now. I helped a friend do a new magna flow cat on her Toyota sequoia and the code didn't go away still so we ended up tricking it with a anti fouler.
That looks like a handy code reader with the ability to graph the O2 sensors!
Yeah, engine light would come and go sometimes with the P0420 code. My thinking now that since it was physically broken inside, that means it would sometimes read ok just slightly ok enough to turn off the engine light.
yeah its actually my scanner from my previous BMW haha but it works just the same for this truck, minus some tuning features.
Make sure you take your old cat to a recycler, some are worth hundreds of dollars. Did an older Honda about 8 months ago got roughly $800 for the scrap cat (prices were high back then). My off the wall guess is that you will get ~ $200 for the old cat if its OEM.
11-07-2021, 12:59 PM
